RWM8.5 Map editor error

[luck_pig]

I download RWM 8.5 software from here, and play it in WinXP, then I made a map and want to test map in game (use red exclamation point button), and it come out an error said "unknow avia desc".....how do I solve this problem??

SS 2.3 ressorce war is ok for that in my computer.